A follow-up study of early arthropathies. I. Acute and initial arthritis-as in patient study. II. Possible and probable  rheumatoid arthritis-an outpatient study. I. Acute and initial arthritis-how reliable is its diagnosis?
D000328:Adult; D001168:Arthritis / Q000175:diagnosis*; D001172:Arthritis, Rheumatoid / Q000175:diagnosis*; D003095:Collagen Diseases / Q000175:diagnosis; D003937:Diagnosis, Differential; D005500:Follow-Up Studies; D006801:Humans; D012214:Rheumatic Heart Disease / Q000175:diagnosis